Two-photon and three-photon absorption in dinaphthoporphycenes

被引：69
|
作者：
Rao, S. Venugopal [1 ]
Prashant, T. Shuvan [1 ]
Swain, Debasis [1 ]
Sarma, Tridib [2 ]
Panda, Pradeepta K. [1 ,2 ]
Tewari, Surya P. [1 ]
机构：
[1] Univ Hyderabad, ACRHEM, Hyderabad 500046, Andhra Pradesh, India
[2] Univ Hyderabad, Sch Chem, Hyderabad 500046, Andhra Pradesh, India
来源：
CHEMICAL PHYSICS LETTERS | 2011年 / 514卷 / 1-3期
关键词：
NONLINEAR-OPTICAL PROPERTIES; Z-SCAN TECHNIQUE; CROSS-SECTIONS; EXPANDED PORPHYRINS; PHTHALOCYANINES; CHROMOPHORES; FEMTOSECOND; PORPHYCENES; AROMATICITY; DERIVATIVES;
D O I：
10.1016/j.cplett.2011.08.021
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We present our results from the detailed investigations of both metal free-base and metal substituted dinaphthoporphycenes using the Z-scan technique with picosecond pulses. The compounds exhibited singular nonlinear absorption properties because of their molecular structure allowing us to access the two-photon and three-photon absorption states with different peak intensities when excited at the wavelength of 800 nm. This type of behaviour is explained using the unique energy level configuration of porphycene molecules. The orders of magnitude of both two-photon absorption and effective three-photon absorption coefficients and cross-sections were estimated along with sign and magnitude of the third order nonlinearity. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：98 / 103
页数：6
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